Never blame your partner if your needs aren't being met because that is your fault. You are an adult, you choose to be in a relationship with this person. When you are blaming them you are projecting your mixed feelings and undiscovered needs onto them, what chance do they have of helping you if you don't even truly know what you need? It is always better to openly state your needs and wants by openly talking about them.
The blame game is always a bad game to play, one that will eventually take a toll on your partner and will ruin your relationship. It is your responsibility to bring your needs to the table and to get them met even if your partner can not or will not meet them. As an adult, you must have real and firm boundaries about what you tolerate and what not, and if your partner seems to neglect them even after you clearly expressed your needs then it is time for you to find someone that can fulfill them.